(7 a^2-63 b^2 )=? - Vidyadip

MCQ

$\left(7 a^2-63 b^2\right)=?$

A
$(7 a-9 b)(9 a+7 b)$
B
$(7 a-9 b)(7 a+9 b)$
C
$9(a-3 b)(a+3 b)$
✓
$7(a-3 b)(a+3 b)$

✓

Answer

Correct option: D.

$7(a-3 b)(a+3 b)$

D

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